Family Fun Workshop Ever wonder how boomerangs find their way back to you? You won't once you've taken this weekend's Museum of Flight workshop, where you'll make your very own boomerang. 9404 E. Marginal Way S., 206-768-7126. $14 ($13 seniors, $7.50 youth 5 to 17). 11:15 a.m. or 1:15 p.m. Sat., Sept. 17-Sun., Sept. 18.

Adoption Information Meeting Talk to an adoptive family and learn about the logistics of adopting a child from Asia, Russia, or the U.S. at a session sponsored by the World Association for Children and Parents. Bellevue Regional Library, 1111 110th Ave. N.E. (Bellevue), 206-575-4550. Free. 2-4 p.m. Sat., Sept. 17.

Mysteries of Bruce and Brandon Lee The deaths of the father-son movie stars remain unexplained, but if anyone can get at the truth, it's Capitol Hill's Museum of the Mysteries. 623 Broadway Ave. E., 206-328-6499. $3 (suggested). 7 p.m. Sat., Sept. 17.

Bug Blast Snuggle up to our six- and eight-legged friends during a day of hands-on insect activities at the Burke Museum. Plenty of bug experts will be on hand to answer questions, and the squeamish can look at specimens under a microscope rather than touching them. Northeast 45th Street and 17th Avenue Northeast, 206-543-5590. $6.50 ($5 seniors, $4 youth). 10 a.m.-4:30 p.m. Sun., Sept. 18.

Duwamish River Boat Tour Environmental activist B.J. Cummings is your guide on a two-hour excursion down the Duwamish; you'll learn about its history and native species, and current efforts to clean it up. Call 206-954-0218 for departure location. $10 (suggested). 10 a.m.-noon. Sun., Sept. 18.

Kayak Demonstration If you've never given the long, narrow boats a try, now's the time. Wilderness Inquiry and Seattle Parks & Rec are co-sponsoring this event, open to kids and those with disabilities. Green Lake Small Craft Center, 5900 Green Lake Way N., 206-615-0617. Free. 1-5 p.m. Sun., Sept. 18.

Public Forum Speak your mind on proposed amendments to Washington's child-support guidelines at a forum hosted by the Department of Social and Health Services. Downstairs at Town Hall, 1119 Eighth Ave., 360-664-5052. Free. 6:30 p.m. Mon., Sept. 19.

David Cole As part of Seattle Public Library's September Project, the Georgetown University law professor, author (Terrorism and the Constitution), andNPR commentator speaks on the state of free speech in the post-9/11 era. Central Library, 1000 Fourth Ave., 206-386-4636. Free. 7:30 p.m. Mon., Sept. 19.

Barbara Ehrenreich She told heartbreaking stories of minimum-wage survival in Nickel and Dimed; in her new book, Bait and Switch, the author explores the frustration of white-collar unemployment. Town Hall, 1119 Eighth Ave., 206-624-6600. $5. 7:30 p.m. Mon., Sept. 19.

Michael Bair At the Museum of Flight, the Boeing executive talks about the development and production of the company's highly fuel-efficient new aircraft, the 787 Dreamliner. 9404 E. Marginal Way S., 206-764-5700. Free. 6 p.m. Tues., Sept. 20.

George Galloway The British politician, who ardently attacked U.S. foreign policy on the Senate floor in May, talks about the war in Iraq and Dubya's (non-)response to Katrina. Joining him are local antiwar activists Muna Coobtee, Amy Hagopian, and Monica Benderman, whose soldier husband is doing time at Fort Lewis for refusing to return to Iraq. UW Kane Hall, 206-851-4862. $12 ($8 students). 7 p.m. Tues., Sept. 20.